reactos/subsys/win32k/include/ssec.h

   1 /* $Id$
   2  *
   3  * COPYRIGHT:        See COPYING in the top level directory
   4  * PROJECT:          ReactOS Win32k subsystem
   5  * PURPOSE:          shared sections
   6  * FILE:             include/ssec.h
   7  * PROGRAMMER:       Thomas Weidenmueller <w3seek@reactos.com>
   8  *
   9  */
  10
  11 #ifndef _WIN32K_SSEC_H
  12 #define _WIN32K_SSEC_H
  13
  14 typedef struct _SHARED_SECTION
  15 {
  16   PSECTION_OBJECT SectionObject;
  17   PVOID SystemMappedBase;
  18   ULONG ViewSize;
  19 } SHARED_SECTION, *PSHARED_SECTION;
  20
  21 typedef struct _SHARED_SECTIONS_ARRAY
  22 {
  23   struct _SHARED_SECTIONS_ARRAY *Next;
  24   ULONG nEntries;
  25   SHARED_SECTION SharedSection[0];
  26 } SHARED_SECTIONS_ARRAY, *PSHARED_SECTIONS_ARRAY;
  27
  28 typedef struct _SHARED_SECTION_POOL
  29 {
  30   FAST_MUTEX Lock;
  31   ULONG PoolSize;
  32   ULONG PoolFree;
  33   ULONG SharedSectionCount;
  34   SHARED_SECTIONS_ARRAY SectionsArray;
  35 } SHARED_SECTION_POOL, *PSHARED_SECTION_POOL;
  36
  37 NTSTATUS INTERNAL_CALL
  38 IntUserCreateSharedSectionPool(IN ULONG MaximumPoolSize,
  39                                IN PSHARED_SECTION_POOL *SharedSectionPool);
  40
  41 VOID INTERNAL_CALL
  42 IntUserFreeSharedSectionPool(IN PSHARED_SECTION_POOL SharedSectionPool);
  43
  44 NTSTATUS INTERNAL_CALL
  45 InUserDeleteSharedSection(IN PSHARED_SECTION_POOL SharedSectionPool,
  46                           IN PVOID SystemMappedBase);
  47
  48 NTSTATUS INTERNAL_CALL
  49 IntUserCreateSharedSection(IN PSHARED_SECTION_POOL SharedSectionPool,
  50                            IN OUT PVOID *SystemMappedBase,
  51                            IN OUT ULONG *SharedSectionSize);
  52
  53 NTSTATUS INTERNAL_CALL
  54 IntUserMapSharedSection(IN PSHARED_SECTION_POOL SharedSectionPool,
  55                         IN PEPROCESS Process,
  56                         IN PVOID SystemMappedBase,
  57                         IN PLARGE_INTEGER SectionOffset  OPTIONAL,
  58                         IN OUT PVOID *UserMappedBase,
  59                         IN PULONG ViewSize  OPTIONAL,
  60                         IN BOOLEAN ReadOnly);
  61
  62 NTSTATUS INTERNAL_CALL
  63 IntUserUnMapSharedSection(IN PSHARED_SECTION_POOL SharedSectionPool,
  64                           IN PEPROCESS Process,
  65                           IN PVOID SystemMappedBase,
  66                           IN PVOID UserMappedBase);
  67
  68 extern PSHARED_SECTION_POOL SessionSharedSectionPool;
  69
  70 #endif /* ! defined(_WIN32K_SSEC_H) */
  71
  72 /* EOF */
  73